doctors say if you're in a normal environment and you're not exposed to germs, overusing hand sanitizers might make you more susceptible to infections. doctors say a super-clean lifestyle could be partly to blame for the rise in the number of people with allergies and asthma. >> agree with that. pretty soon you'll be able to see the calorie count wheni do buy a soda from the vending machine. coke, pepsi and dr. pepper are rolling out machines that will feature calorie counts on the buttons of the machine. the machines will launch in chicago and san antonio next year. the american beverage association says the machines will remind customers to consider lower calorie alternatives. do you think there will be a rise in the diet coke and diet pepsi and all those drinks? >> i think people have to take responsibility for themselves. do you have to put the numbers on the machines? remind people? you know what you should and shouldn't be eating or drinking, come on. >> all right. 5:21. >> if i don't want to know, i don't want to know, don't put the numbers there. >> ignorance is bliss. >>> 5:21.